Adds Joanneum's Sidla: "Any form of change detection, even with very sophisticated models, is limited in complex real-world situations. When it comes to tracking of objects, it is essential to have a sense of where things are going. The algorithms for the computation of optical flow are countless and we, on our own, have developed several solutions in the last 15 years. To optimize the efficiency and accuracy of such an algorithm for LabView implementation we chose the Kanade Lucas Tomasi (KLT) point-tracking algorithm. This method uses local gradient and image differences in order to calculate the motion of small patches from image to image in an iterative process."

Deep In The Heart Of TI

Texas Instruments is playing a role in the surveillance market based on its DaVinci™ technology. DaVinci is a collection of digital signal processing (DSP) system-solution components tailored for digital cameras, video security, advanced medical imaging and portable video players.

"The way it evolved, it was a general technology platform to handle video, then digital media. The first [evolution of DaVinci] was a huge success in the video surveillance market in DVRs. It had multiple channels and six video ports.

Over time, customers used the device in digital IP, but it had too many peripherals. Based on customer input, we implemented heterogeneous architecture. It was more sophisticated video. We also looked at how the overall IP camera worked. Customers want to encode; they want flexible architecture with mpeg4, jpeg, and the video compression standard H.264, which allows them to increase the video stream."